Related Clues:

• Double act that's totally lifeless
• Two parties and there's nothing left of the bird!
• Old woman harbouring love for departed flier
• Old bird from Missouri with a following
• Cook and serve bird
• Two rooks and another bird
• Extinct birdbrain?
• Extinct emu relative
• Bird that died out in Missouri area
• Two parties – one extinct
• Kiwi's extinct relative
• *Caucus-race proposer in Wonderland
• Ultra-conservative parties
• Bird of the past
• Bird so dumb it got itself extinct